fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
...
fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
Starting 3 threads
Threads: 3
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=22557, got signal=6
Threads: 2
Threads: 2: [F_F] [100.0% done] [    84/  5520 kb/s] [eta 00m:00s]
Threads: 1: [F_E] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [F__] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [V__] [92.3% done] [ 37804/     0 kb/s] [eta 00m:01s]
Threads: 1: [V__] [100.0% done] [ 48256/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=22556
  read : io=100MiB, bw=7,639KiB/s, runt= 13725msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  831, avg=12.69, stdev=49.75
    bw (KiB/s) : min=    0, max=49111, per=297.18%, avg=24327.25, stdev=25815.33
  write: io=100MiB, bw=9,054KiB/s, runt= 11528msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  655, avg= 2.08, stdev=29.41
    bw (KiB/s) : min=    0, max=111548, per=171.65%, avg=45641.33, stdev=58470.09
  cpu          : usr=7.43%, sys=3.26%, ctx=3928
  IO depths    : 1=1.7%, 2=57.9%, 4=31.7%, 8=8.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.7%, 4=3.1%, 10=30.1%, 20=15.7%, 50=1.7%, 100=0.0%
     lat (msec): 250=0.1%, 500=0.1%, 750=0.2%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=22557
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=8.4%, 2=85.3%, 4=2.9%, 8=3.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=93.9%, 4=1.3%, 10=0.6%, 20=0.1%, 50=0.6%, 100=3.3%
     lat (msec): 250=0.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=22558
  read : io=0KiB, bw=0KiB/s, runt=  4154msec
  write: io=100MiB, bw=25,575KiB/s, runt=  4100msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=    6, avg= 0.22, stdev= 0.50
    bw (KiB/s) : min=    0, max=125132, per=235.31%, avg=62566.00, stdev=88481.69
  cpu          : usr=20.70%, sys=8.28%, ctx=1816
  IO depths    : 1=0.3%, 2=95.6%, 4=4.1%, 8=0.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=98.1%, 4=1.0%, 10=0.3%, 20=0.0%, 50=0.0%, 100=0.0%
     lat (msec): 250=0.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=107MiB, aggrb=8,186KiB/s, minb=0KiB/s, maxb=7,639KiB/s, mint=4154msec, maxt=13725msec
  WRITE: io=292MiB, aggrb=26,589KiB/s, minb=0KiB/s, maxb=25,575KiB/s, mint=4154msec, maxt=13725msec

Disk stats (read/write):
  sda: ios=956/2125, merge=317/72416, ticks=6336/1476432, in_queue=1485648, util=95.96%
2.78user 1.12system 0:14.05elapsed 27%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2463minor)pagefaults 0swaps